Static



. 1,697,258 J. J. AURYNGER STATIC CONDENSER Jan. 1, 1929.

Filed April 15, was

Patented Jan. 1, 1929.

JOHN AURYNGER, 0F TAKOMA PARK, MARYLAND.

STATIC CONDENSER.

Application filed April 15, 1926. Serial No. 102,201.

The object of the invention is a condenser provided with plates havingcup-shaped bosses formed by embossing the plates which make betterelectrical connections and decrease the number of movable parts. Allspacing devices are eliminated. The vertical posts which hold thecondenser plates in alignment are strengthened with the result thatmechanical losses are lessened.

The invention is related'to condensers in which the plates are welded tothe vertical posts without the use of bolts and washers. The inventionis also related to the tapering lugs'cast on the grids of storagebatteries. Other than a likeness of the bosses to the central orifice inthe lugs on the grids, which is filled again with a fusible metal, thesimilarity ceases to exist.

This invention diflers from tubular projections as in the case of thestorage battery grids in which the lugs are tapering and telescope oneWithin the other. In this invention the bosses can be made only' byembossing the plates of uniform thickness, are perpendicular to theplate, do not taper, and have the bottoms of the depressions more orless removed.

Referring to the drawing by figures, Fig. 1 represents a variablecondenser consisting of two component groups having a plurality ofhorizontal parallel metallic plates. The

vibrations and electrical figure is isometric with respect to the twosets of plates separated by a dielectric medium. Fig. 2 isacross-section and plan views of one of the vertical posts showing thecircular cup-shaped bosses C of one of the group of plates as B. Fig. 3is a similar section and plan of a modified formllof boss or projectionand has no particular value. Fig; 4 is a section and plan of anothe 'rmodification of the boss or projection and is of special value in therotor group of plates in which there is only one vertical post to hbldthe plates in alignment. Fig. 5 is a section and plan of anothermodification of the boss or projection and is a departure from thecircular bosses.

Referring to the drawing by letter, in Fig. 1 the component platesconsist of two groups of metallic plates A and B separated by adielectric medium as air'or oil orcmica. The plates are made of asuitable metal as aluminum and brass. Aluminum being hard to weld lendsitself easily to embossipg.

The rotor A has a single boss C embossed around the center of the axisof rotation at G which representsa spindle passing through the bossesand holding the plates parallel. The plates are assembled on thespindles with nuts over the end or b other means. The posts D, E and Fare not limited in numbers and hold the stationary plates B in -thegroup. The bosses C are of uniform length and set off on the verticalposts a relative distance which is the length of the dielectric mediumbetween the plates. Studs, bolts and other means may be passed throughthe bosses C and the group of plates assembled by nuts on the ends ofbolts or by other means.

In the cross-section View of Fig. 2, the bosses C have the bottom of thecup wholly removed. The two'essentials of condensers are plate area andthe dielectric medium. The vertical post as D and the boss C on plate Bprovides for this. Each boss forms a foot having a-toe That the end ofthe boss and a heel R next to the plate. Th1 toe T is broad,straight-sided and perpendicular to'the plate. It is a continuation ofhe heel R which forms a sharp right angle with the plate. The toe of onefoot on one plate rests on the under sideof the next plate below theheel on that plate.

In Fig. 3 which is a modification of Fig. 2, the bottoms of thedepressions are partially removed. Both toes and heels of the bosses Care angular. Toes T and heels R are removed from the additional supportof the bolt 'D and other means through the depression.

In Fig; 4 the circular bosses C are represented as flattened on oneside. This fiatness prevents the around the bolt which passes throughthe boss, at D.

In Fig. 5 the circular depressions C are represented as square. Fig. 5as well as Fig. 4 is for bosses which do not allow plates to rotatearound a bolt or other means which must have a cross sectionorresponding in shape to that of the bosses and pass through the bossesfor assembly and is particularly adapted'to the rotor plates, A.

aving described my invention the benefits to be obtained are as follows:the manufacture of condensers is simplified, less movable parts are usedand the parts which remain are strengthened by being in single platesfrom; rotating pieces.- mized. I claim Also the electrical losses aremini- I. In 'an electrical condenser, a plurality of metallic platesdivided into two component groups, separated.

ofmetalli'c plates divided into tvlo'compo ctrie meseparated by a dielbosses nent groups with perpendicular dium, provided with regularflattened surfaces expanded from said plates said bosses on one plate inwith regular from said PltltQS,-SLl.d bosses on one plate in one grouphaving sufficient depth to inclose a dielectric medium between one plateand adjacent plates-of the same group and means ,i'or assembling saidplates together.

3. In an electrical condenser, a plurality of metallic plates dividedinto two'cor nponent groups, separated by a dielectric medium, providedwith perpendicular bosses flattened surfaces expanded one group havingsufficient depth to inclose tt'tllClGCU'IC medium between said platesand adpu-ent plates of the component group.

JOHN J. AURYNGER.

